VAICO Crankcase Breather PCV Valve V20-3342 Aftermarket replacement crankcase ventilation valve for selected BMW N57 3.0d diesel engines.Common use: Helps regulate crankcase pressure and oil vapour flow through the engine ventilation system.Possible symptoms of failure: Increased oil consumption, oil vapour issues, rough idle, excessive crankcase pressure, oil leaks or exhaust smoke.Key fitment: BMW 3, 4, 5, 6, 7 Series, X3, X4, X5, X6 with selected N57 3.0d diesel engines.Engine codes: N57 D30 A, N57 D30 BOEM numbers: 11 12 8 507 607, 11128507607, 8 507 607 Compatibility list is for reference only. Contact us with VIN to confirm.Condition: Aftermarket NEW